Add UI interaction and component standards for Gallery screens.

Co-authored-by: Cursor <cursoragent@cursor.com>

Documentation/basics.md

@@ -67,7 +67,8 @@ Gallery/
 │   │   ├── utils/debugMode.ts               # Debug mode + “Show more” localStorage prefs
 │   │   ├── utils/timelineView.ts          # Shared zoom/pan math for timeline + movements
 │   │   ├── utils/movementColor.ts         # Shared vivid/shade hex helpers for all movement charts
-│   │   └── utils/movementTree.ts          # View-independent Tree of Art layout engine│   └── dist/            # Production build (served by API when present)
+│   │   └── utils/movementTree.ts          # View-independent Tree of Art layout engine
+│   └── dist/            # Production build (served by API when present)
 ├── scripts/             # Seed, bios, catalog expansion, image fetch, checkup tools
 │   ├── seed-wikipedia.js
 │   ├── seed-catalog-data.js
@@ -546,3 +547,4 @@ See [API.md](API.md#authentication) and [data-and-images.md](data-and-images.md#
 | [tours.md](tours.md) | Guided tours — editor, public popup, 3D tour hall |
 | [i18n-russian.md](i18n-russian.md) | Russian UI + entity_translations |
 | [data-and-images.md](data-and-images.md) | Image pipeline and seeding |
+| [ui-interaction-and-component-standards.md](ui-interaction-and-component-standards.md) | UI interaction, navigation, and component standards |